1255357721124 has 72 divisors (see below), whose sum is σ = 3524245593120. Its totient is φ = 386263908576.

The previous prime is 1255357721119. The next prime is 1255357721131. The reversal of 1255357721124 is 4211277535521.

1255357721124 is a `hidden beast` number, since 1 + 2 + 5 + 53 + 577 + 2 + 1 + 1 + 24 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1255357721124.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34371342 + ... + 34407845.

It is an arithmetic number, because the mean of its divisors is an integer number (48947855460).

Almost surely, 2^{1255357721124} is an apocalyptic number.

It is an amenable number.

1255357721124 is an abundant number, since it is smaller than the sum of its proper divisors (2268887871996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1255357721124 is a wasteful number, since it uses less digits than its factorization.

1255357721124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68779226 (or 68779205 counting only the distinct ones).

The product of its digits is 588000, while the sum is 45.

The spelling of 1255357721124 in words is "one trillion, two hundred fifty-five billion, three hundred fifty-seven million, seven hundred twenty-one thousand, one hundred twenty-four".